Disconnect your browser from the internet with offline mode.
Offline Mode is an extension that lets you easily disconnect your browser from the internet.
The toolbar button serves as an ON|OFF switch. When the addon is active toolbar icon is dark grey and when it is inactive, the button is light grey. Pressing on the toolbar button will toggle the offline mode. When offline mode is active, all internet requests to, and from the browser, are blocked. This is similar to disconnecting your computer from the internet. Within the offline mode local page, press on the go back button to navigate to the original page (remember to turn off the addon first).
If you have a feature request or found a bug to report, please fill the bug report form on the addon's homepage (https://mybrowseraddon.com/offline-mode.html).